build(deps): Bump go.opentelemetry.io/collector/cmd/mdatagen

Bumps [go.opentelemetry.io/collector/cmd/mdatagen](https://github.com/open-telemetry/opentelemetry-collector) from 0.20.0 to 0.22.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-collector/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-collector/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-collector@v0.20.0...v0.22.0)

Signed-off-by: dependabot[bot] <[email protected]>

internal/tools/go.mod

@@ -11,6 +11,6 @@ require (
 	github.com/tcnksm/ghr v0.13.0
 	go.opentelemetry.io/collector/cmd/checkdoc v0.0.0-20210315221557-cadd84d04ee9
 	go.opentelemetry.io/collector/cmd/issuegenerator v0.22.0
-	go.opentelemetry.io/collector/cmd/mdatagen v0.20.0
+	go.opentelemetry.io/collector/cmd/mdatagen v0.22.0
 
 )

internal/tools/go.sum

@@ -540,8 +540,8 @@ go.opentelemetry.io/collector/cmd/checkdoc v0.0.0-20210315221557-cadd84d04ee9 h1
 go.opentelemetry.io/collector/cmd/checkdoc v0.0.0-20210315221557-cadd84d04ee9/go.mod h1:ocXcey1UOABwvbGLqOrCPY5TDxEV+T5XW4KoEicDZfs=
 go.opentelemetry.io/collector/cmd/issuegenerator v0.22.0 h1:iPEvA0bH3iPDlugv0CjXkl5t1fpko1ZEnmDRBdtw/bM=
 go.opentelemetry.io/collector/cmd/issuegenerator v0.22.0/go.mod h1:RAUZ03z9JaCu9D+ox5p7LDcv/d4D02EiBJg0sOOzoVY=
-go.opentelemetry.io/collector/cmd/mdatagen v0.20.0 h1:xxCYRdc2JybPBO13x5jZ5JxUbAxPAk0y4E3UBVAllyI=
-go.opentelemetry.io/collector/cmd/mdatagen v0.20.0/go.mod h1:oWCxEeYMK/9i6cQEVs5YCWr5Q5KZn9uxnLLQxm8j/S4=
+go.opentelemetry.io/collector/cmd/mdatagen v0.22.0 h1:q2sti5WwPUf+7HKkJAbRHAcDGlwPE3kN5b+sQL7x5AU=
+go.opentelemetry.io/collector/cmd/mdatagen v0.22.0/go.mod h1:oWCxEeYMK/9i6cQEVs5YCWr5Q5KZn9uxnLLQxm8j/S4=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.6.0 h1:Ezj3JGmsOnG1MoRWQkPBsKLe9DwWD9QeXzTRzzldNVk=
 go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=